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  • 1995-1999  (3)
  • Bicarbonate  (2)
  • Chronic lymphatic leukemia  (1)
  • Acquired immunodeficiency syndrome
  • 1
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Polymerase-Kettenreaktion ; Chronisch lymphatische Leukämie ; Monoklonalität ; Leptomeningeale Infiltration ; Key words Polymerase chain reaction ; Chronic lymphatic leukemia ; Monoclonality ; Leptomeningeal infiltration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The diagnosis of leptomeningeal dissemination of chronic lymphatic leukemia (CLL) by conventional cytology is unreliable because cytomorphologic criteria of malignancy are often lacking. Immunophenotyping of leukocyte differentiation antigens may also be of limited diagnostic value due to the small number of cells in cerebrospinal fluid (CSF) samples. Molecular methods may support the specific diagnosis of leptomeningeal infiltration of CLL. We present an 54 old patient who was diagnosed with CLL five years ago. Despite clinical signs of leptomeningeal involvement neither magnetic resonance imaging (MRI) nor conventional CSF analysis were suggestive of lymphomatous meningitis. Using PCR we selectively amplified the highly variable and clone-specific CDR3 region of the locus encoding the immunoglobulin heavy chain (IgH) in DNA obtained from both CSF and peripheral blood cells. Analysis of PCR products by high resolution gel electrophoresis revealed a single DNA fragment respectively indicating the presence of a monoclonal cell population in both compartments. DNA sequence analysis of the amplified CDR3 segments confirmed the clonal identity of cells and the leptomeningeal dissemination of CLL.
    Notes: Zusammenfassung Die Diagnose einer leptomeningealen Infiltration ist bei der chronisch lymphatischen Leukämie (CLL) mit konventionellen zytomorphologischen Methoden nicht hinreichend möglich. Das Zellbild ist meist monomorph, und eindeutige Malignitätskriterien fehlen. Eine Immunphänotypisierung mit Bestimmung von Leukozytendifferenzierungsantigenen erlaubt eine weitere Eingrenzung, ist jedoch häufig wegen geringen Zellmaterials nur eingeschränkt möglich. Molekulargenetische Methoden können zur weiteren Diagnosesicherung eingesetzt werden. Bei einem 54jährigen Patienten mit einer seit 5 Jahren bestehenden Diagnose einer CLL konnte trotz klinischen Verdachts weder kernspintomographisch noch in der konventionellen Liquordiagnostik ein Anhalt für eine leptomeningeale Infiltration der CLL gefunden werden. Mit der Polymerase-Kettenreaktion (PCR) wurde die hochvariable, B-Zell-Klon-spezifische CDR3-Region des für die Immunglobulinkette-Schwerkette (IgH) kodierenden Locus selektiv amplifiziert. Als Ausgangsmaterial wurde zelluläre DNA aus Liquor und Blut des Patienten verwendet. Die Analyse der PCR-Produkte mit hochauflösender Gelelektrophorese ergab sowohl für B-Zellen aus dem Liquor als auch für B-Zellen aus dem Blut ein einzelnes DNA-Fragment. Hierdurch wurde der Nachweis erbracht, daß die Zellpopulationen in beiden Kompartimenten monoklonal sind. Die DNA-Sequenz-Analyse der amplifizierten CDR3-Segmente bestätigte die klonale Identität der Zellen und damit eindeutig die leptomeningeale Infiltration der CLL.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Keywords: Key words Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A, n = 24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B, n = 24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C, n = 14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45 ± 41 min, range 20–180, and C: 80 ± 72 min, range 20–210) than in the mask CPAP group (A: 224 ± 256 min, range 30–1200, P = 0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a non-tension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A,n=24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B,n=24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C,n=14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45±41 min, range 20–180, and C: 80±72 min, range 20–210) than in the mask CPAP group (A: 224±256 min, range 30–1200,P=0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a nontension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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